alleryYoung's 1801 interference experiment firmly showed that light is a:
AFluid flow
BSolid beam
CWave motion
DParticle stream
Answer & Solution
Correct answer: C. Wave motion
1. Only waves can interfere to give dark and bright bands.
2. Young saw exactly such bands.
3. So light is a wave motion.
_Source: syllabus Physics Part II, Chapter 10, Wave Optics._
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